moderately significantP ≤ 0.05
Analysis: Descriptive and inferential statistical analysis – Student's t - and Chi-square/Fisher exact test were used (SAS 9.2, SPSS 15.0) P value described as *moderately significant ( P value: 0.01 < P ≤ 0.05) **strongly significant ( P value: P ≤ 0.01).